Draft-inducing, spark-destroying, and fume-conveying apparatus for locomotives and the like.



W. T. STOW. DRAFT INDUCING,SPARK DESTROYING.AND FUME CONVEYING APPARATUS FOR LOCOMOTIVES AND THE LIKE.

APPLICATION FILED MAR. 18,. l9l5. 1,227,340. Patented May 22, 1917.

A 6 4 1 ZE l y 9 d g j i g 5 f] UNITED STATES PATENT onruon.

WILLIAM THOMAS STOW, OF COOLAMON, NEW SOUTH WALES, AUSTRALIA.

DRAFT-INDUCING, SPARK-DESTROYING, AND FUME-CONVEYIN' G APPARATUS FOR LOCOMOTIVES AND THE LIKE.

Specification of Letters Patent.

Patented May 22, 1917.

Application filed March 18, 1915. Serial No. 15,312.

To all whom it may concern:

Be it known that I, WILLIAM THOMAS S'row, of Coolamon, in the State of New South l/Vales, Commonwealth of Australia, machinery expert, have invented certain new and useful Improvements in Draft-Inducing, Spark-Destroying, and F ume-Conveying Apparatus for Locomotives and the like, of which the following is a specification.

My invention is intended to enable users or makers of traction and portable engines, and locomotives, to attach thereto mechanical means by which to prevent dangerous sparks issuing from funnels; also to induce draft of controlled strength to a funnel, smoke box, or suitable chamber. The fumes may be returned to the combustion chamber or furnace, or may be discharged into the atmosphere, at Will, and if desired are directed to the ground.

In the accompanying drawings:

Figure 1 is a view in front elevation of a smoke funnel fitted with my invention.

Fig. 2 is a sectional elevation of the arrangement shown in Fig. 1, the section of Fig. 2 being taken at right angles to Fig. 1.

In these views 1 is a smoke stack or chimney, 2 is any suitable part of its length at which to provide a branch 2*, and 3 is its base. The base 3 of the chimney is mounted on the smoke box (not shown) within which it is customary to cause exhaust steam to discharge for the purpose of assisting or creating draft through boiler tubes, though in construction the exhaust is not necessarily so located, but may be utilized otherwise at will.

On the branch 2 I provide a casing 6 containing a suction fan 12, and a spark destroying or beating means consisting of suitable arms or spokes 14 on a spindle 9 which is rotated so that the arms pass between closely set inwardly projecting bars 13.

The fan will draw to and force beyond itself products of combustion which leave the smoke box by way of the chimney. The casing 6 has a chamber 5 at one end for the fan 12 and a chamber 5 at the other end for the revolving arms 14. The fan rotation in chamber 5 is eflected by any suitable connection to the available power, steam being made for example to rotate, as in Fig. 2, a rod 7 gear wheels 8, and the spindle 9 carrying the fan 12 and spark beater arms 14.

I use a discharge to the atmosphere as 16, or let the discharge leave at the funnel top. In Fig. 2 at the base of space 5 the parts 13 and 14 are omitted to show the chamber walls. The chimney may be closed by a suitable valve shown at 21, Fig. l, and this valve may have on its spindle means (not shown) for actuating it from a dis tance.

A conduit, 6*, leads from the chamber 5 to chamber 5, which contains the spark beater when the latter is located as in Fig. 2 but these positions are not essential.

The products of combustion are drawn from the chimney 1 through the branch pipe 2 into the chamber 5 by the operation of the fan 12. The said products drawn into the casing 6 by the fan are directed through conduit 6 into the chamber 5 wherein any live sparks are beaten out by the rotatingarms 14 operating between the fixed arms 13.

Having thus described my invention, what I do claim is 1. A spark arresting apparatus comprising in combination a chamber for the products of combustion, a spark beating device, a fan in said chamber to draw products of combustion and force them to a space containing said spark beating device, said device having arms to rotate past other arms substantially as described.

2. A spark arresting apparatus comprising in combination a casing adapted to be arranged in communication with a smokebox, a chamber in each end of the casing, a fan in one chamber, fixed arms in the second chamber, and a plurality of revoluble arms operatively mounted in the second chamber, substantially as described.

3. A spark arresting apparatus comprising in combination a chamber to receive the products of combustion, a fan chamber in one end and a beater chamber on the opposite end of said first-mentioned chamber, an opening between the first mentioned chamber and the fan chamber, a passage leading from the fan chamber to the beater chamber, and an outlet from the beater chamber for the products of combustion, substantially as described.

4. A spark arresting apparatus comprising in combination a chamber to receive the products of combustion, a fan chamber in one end and a beater chamber on the opposite end of said first-mentioned chamber, an opening between the first mentioned chamber and the fan chamber, a passage leading from the fan chamber to the beater chamber, an outlet from the beater chamber, a spindle passing through the three chambers and 1 fitted with a fan and heaters to operate in their respective chambers, fixed arms in the beater chamber, and gearing for conveying motion to said spindle, substantially as described.

In testimonywhereof I afiix my signature in presence of two witnesses.

' \VILLIAM THOMAS STOXV. Witnesses:

A. J. GALLINAN, WILLIAM A. Asi-rBow.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

